diff --git a/src/reserved.ts b/src/reserved.ts
index 32f8960a..db7288ec 100644
--- a/src/reserved.ts
+++ b/src/reserved.ts
@@ -93,7 +93,7 @@ const RESERVED_USERNAMES = new Set([
   'tesla',
   'tezos',
   'travel',
-  'twitter',
+  'x',
   'uber',
   'un',
   'uniswap',